Compilare: main.cpp: In function 'int main()': main.cpp:10:13: warning: unused variable 'i' [-Wunused-variable] int p,n,i,j,s=0,t,nr; ^ main.cpp:10:15: warning: unused variable 'j' [-Wunused-variable] int p,n,i,j,s=0,t,nr; ^ main.cpp:10:23: warning: unused variable 'nr' [-Wunused-variable] int p,n,i,j,s=0,t,nr; ^~ main.cpp:11:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&p,&n); ^